The technology can be used to track individuals through areas
monitored by CCTV (i.e. security) cameras by analyzing their
"gait signature," or specific way of walking.

The system combines computer models of the area with CCTV feeds
to record a person's gait signature at certain points, check
where else that person has been in the area and display the
results on a central computer.

As of now it cannot pick someone out of a crowd with 100
percent certainty.

Perhaps that's why the NPL and its partners—the Centre for
Advanced Software Technology, the BBC and BAE Systems—are "particularly focused"
on standardizing the gait recognition measurement, which involves
variables including equipment, timing and position.

"Ultimately this provides a security system that combines
real-time video and automated biometrics recognition," the NPL
states. "It presents results in an interactive and intuitive 3D
model, which provides the security control room with a better
spatial understanding of events and locations than could be
achieved with a wall of … unrelated cameras."